This Piston Assembly is based off a 3.7” (94mm) diameter Piston Head design, with a 6” center to center Connecting Rod. Originally modeled in 3D Studio Max 2012 and rendered using Mental Ray. A Mesh only max file is included in the Max downloads with a material library. Exported FBX, 3DS, OBJ formats are Mesh only with textures included in downloa. Cylinder are vans, utilities and other vehicles that have cargo areas with restricted natural air movement and ventilation. This includes vehicles where gas cylinders are stored under canopies, inside service bodies or toolboxes, and vehicles where cylinders are covered by tarps or tonneau covers.